Lock



FIG. 1 is a perspective view of a lock showing our new design;

FIG. 2 is a front elevational view of the lock of FIG. 1;

FIG. 3 is a rear elevational view of the lock of FIG. 1;

FIG. 4 is a right side elevational view of the lock of FIG. 1;

FIG. 5 is a left side elevational view of the lock of FIG. 1;

FIG. 6 is a top plan view of the lock of FIG. 1; and,

FIG. 7 is a bottom plan view of the lock of FIG. 1.

The broken lines are for illustrative purpose only and form no part of the claimed design. 

CLAIM We claim the ornamental design for a lock, as shown and described. 